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Home >> Mazda >> 2000 >> MPV DX >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P1624: Immobilizer System Communication Counter = 0 >> Testing
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DTC P1624: Immobilizer System Communication Counter = 0: Testing

NOTE: Record freeze frame data. Check for service bulletins and on-line information.
CAUTION: DO NOT crank engine before replacement PCM is programed to immobilizer system or PCM will be severely damaged. If test procedures require replacement of PCM on a vehicle equipped with immobilizer system and less than two valid keys are available, vehicle must be sent to authorized Mazda dealer to have replacement PCM programed.
  1. Turn ignition off, then to start position. If DTC P1602 is present, go to DTC P1602 test. If DTC P1602 is not present, go to next step.
  2. If DTC P1621 is present, go to DTC P1621 test. If DTC P1621 is not present, go to next step.
  3. Reconnect all components. Using scan tool, clear all DTCs. Turn ignition off. Start engine. Recheck DTCs. If same DTC is present, replace PCM and go to next step. PCM is mounted to passenger floor, behind glove box. See PROGRAMMING in SECURITY & LOCKS article in ACCESSORIES & EQUIPMENT. If same DTC is not present, go to next step.
  4. Perform after repair procedure. See AFTER REPAIR PROCEDURE  . If no DTC is present, testing is complete. If any DTC is present, go to appropriate test for diagnosis and repair.
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